raym0016

Nice! It must be debadged huh? (if it says LT on the back but doesn't have Z71 shocks, then it is a 1LT, Z71 is 2LT) I am sure you could decipher the VIN to get to that information.

ETA: I was meaning to quote the post you were quoting What I think you are missing here is that these numbers correlate with the numbers sold originally and tell nothing of the percentage of trucks with problems. For example. lets look at 2015 sales through september. GM twins lead with 602K followed by Ford (INCLUDING ALL F Series trucks) at 564K, Ram at 330K and Tundra at 89K. If you add those up and use percentages, you get this for new sales: GM-37%, Ford-35%, Ram 21% and Tundra at 5.6%. That is just the 2015 new sales but it illustrates my point. I think you are right that the reality of people with issues is 3-5%. Kinda sucks to think about it if you are one of the few. I test drove 2 GMCs and 4 Silverados, all 2015s, after I read about "vibration issues" and non of them had it. I took them out on the interstate and did a good thorough drive of each of them too. One of the GMCs was a little rough but it was the only Z71 out of the 6 that I drove. I ended up with a 2015 CC SB 5.3 LT with 20" wheels and Bose at a screaming deal and zero issues so far.

I unfortunately did not get a truck that was E85 compatible. I am not sure why but they are very few and far between on the lots. There were more earlier in the year but none of the newer 2015 that the dealers took delivery on were equipped with E85 since June or July. I am not sure why that is the case. I heard that GM was phasing it out but that may have been unsubstantiated rumor. I find it odd, being in MN where E85 is actually fairly common.

Thanks for the feedback. Perhaps it is placebo, that is what I thought. Maybe it has something to do with the quality of gas? I can only assume that the dealership put 87 gas that wasn't necessarily "top tier" like the premium I got, may be that is what I am feeling. Maybe it is more a matter of things breaking in since I now only have 340 miles on the truck.

Yesterday I filled up my tank for the first time with top tier premium. The first tank was from the dealer and I put 300 miles on, was below 1/4 tank and decided to fill it up. I put 18 gallons of 91 octane (top octane in my area) and it just seems to have a tiny bit more get up and go. I am not sure if this is my mind playing tricks or if this is really possible. Considering this is really 18 gallons of 91 and 6 gallons of 87, I am suspecting that my mind is playing tricks on me. For those who have done more extensive "testing", does anyone else have a similar experience with a 5.3L? Is there a difference in "pep" between regular and premium? How about MPG any difference there?

Bone Stock.